Emerging lattice approach to the K-Unitarity Triangle

Understand

It has been clear for past many years that in low energy observables new physics can only appear as a perturbation.

• Therefore precise theoretical predictions and precise experimental measurements have become mandatory.
• Here we draw attention to the significant advances that have been made on the lattice in recent years in $K\to \pi \pi$, $\Delta M_K$, the long-distance part of $\varepsilon$ and rare K-decays.
• Thus, in conjunction with experiments, the construction of a unitarity triangle purely from Kaon physics should soon become feasible.